Plant heat shock transcription factors: divergence in structure and function
Komitet Biotechnologii PAN ; Instytut Chemii Bioorganicznej PAN
A multitude of heat shock transcription factors (HSFs) have been isolated and characterizedfrom various plant species (17-23). Based on a phylogeny analysis of the DNA binding domainsand organization of oligomerization domains, they have been assigned to class A and B of theplant HSF family (20,24 and this paper). None of the tested soybean or Arahidopsis HSF classB members were able to function as transcriptional activators and are, therefore, considered tobe inert (26,59). Conversely, class A HSFs from tomato and Arabidopsis displayed an intrinsiciranscriptional activation potential (26,50). There seems to be variation among plant class AHSFs regarding their transcriptional activation functions: some play a key role in activation ofthe heat shock response, while others act in an auxiliary capacity as HSF activity boosters (54).In contrast, the class B inert HSFs are able to trons-attenuate the transcriptional activity ofactivator HSFs (26). We postulated that heat shock regulation in plants may differ from metazoans by partitioning negative and positive functional domains onto separate HSF proteins (59).In plants two classes of HSFs exist: class A members which function as activators of HSP geneexpression, and a novel class B (inert HSFs) which is largely specialized for repression, orattenuation, of the heat shock response.
Biotechnologia, vol.46, 3 (1999)-.
0860-7796 ; oai:rcin.org.pl:142629 ; IChB B-42
Biblioteka Instytutu Chemii Bioorganicznej PAN
Licencja Creative Commons Uznanie autorstwa-Na tych samych warunkach 4.0
Instytut Chemii Bioorganicznej Polskiej Akademii Nauk
Instytut Chemii Bioorganicznej Polskiej Akademii Nauk
Nov 18, 2020
Oct 12, 2020
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https://rcin.org.pl/ichb/publication/177932
Edition name | Date |
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Plant heat shock transcription factors: divergence in structure and function | Nov 18, 2020 |
Tyczewska, Agata Bąkowska- Żywicka, Kamila
Pieczyński, Marcin Bielewicz, Dawid Dolata, Jakub Szweykowska-Kulińska, Zofia